Fix the 'jsx-key' errors

Moa Svenssonrequested to merge
154-lint-code-jsx-key into develop

Description

This MR fix the 'jsx-key' errors

Tests included/Docs Updated?

  • Included for each change/fix?
  • Passing? (Merge will not be approved unless this is checked)
  • Docs updated?
  • New packages used/requires npm install?
  • Toggle added for new features?

Closes #154

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